using a Pd(OAc)2/PCy3 system is described. A wide range of 2-arylbenzoyl fluoride derivatives can be used as fluorenone precursors and the reaction proceeds via an intramolecular coupling between aromatic C–H bonds with acyl C–F bonds. The reaction can be applied to the synthesis of indenofluorenedione derivatives and to the construction of other molecules with five-membered rings.
General and Practical Carboxyl-Group-Directed Remote CH Oxygenation Reactions of Arenes
作者:Yang Wang、Anton V. Gulevich、Vladimir Gevorgyan
DOI:10.1002/chem.201303511
日期:2013.11.18
Two methods for remote aromatic CHoxygenationreactions, have been developed. Method 1, the Cu‐catalyzed oxygenationreaction, is highly efficient for cyclization of electron‐neutral and electron‐rich biaryl carboxylic acids into 3,4‐benzocoumarins. Method 2, the K2S2O8‐mediated oxygenationreaction, is more general and practical for cyclization of substrates with electron‐donating and ‐withdrawing
已经开发了两种用于远程芳族 C H 氧化反应的方法。方法 1,即 Cu 催化的氧化反应,对于将电子中性和富电子的联芳基羧酸环化为 3,4-苯香豆素非常有效。方法 2,K 2 S 2 O 8介导的氧化反应,对于具有给电子和吸电子基团的底物的环化更为通用和实用(见方案)。
Nonpeptide Arginine Vasopressin Antagonists for Both V1A and V2 Receptors: Synthesis and Pharmacological Properties of 2-Phenyl-4'-((2,3,4,5-tetrahydro-1H-1-benzazepin-1-yl)carbonyl)benzanilide Derivatives.
A series of compounds structurally related to 4'-[(2,3,4,5-tetrahydro-1H-1-benzazepin-1-yl)carbonyl]benzanili de was synthesized and demonstrated to have arginine vasopressin (AVP) antagonist activity for both V1A and V2 receptors. The introduction of a phenyl or a 4-substituted phenyl group into the ortho position of the benzoyl moiety resulted in an increase in both binding affinity and antagonistic
Iodobenzene-Catalyzed Synthesis of Phenanthridinones via Oxidative C–H Amidation
作者:Dongdong Liang、Wenbo Yu、Nam Nguyen、Jeffrey R. Deschamps、Gregory H. Imler、Yue Li、Alexander D. MacKerell、Chao Jiang、Fengtian Xue
DOI:10.1021/acs.joc.7b00106
日期:2017.4.7
synthesis of phenanthridinones from N-methoxybenzamides using an oxidative C–H amidation reaction at room temperature in open air with modest to excellent yields. This method demonstrated unprecedented substrate scope. In particular, it solved the long-standing challenge in the synthesis of phenanthridinones with stericallydemanding substitutions.
Nickel(0)/Imidazolium Carbene Catalyst System for Efficient Cross-Coupling of Aryl Bromides and Chlorides with Organomanganese Reagents
作者:Anne Leleu、Yves Fort、Raphaël Schneider
DOI:10.1002/adsc.200505409
日期:2006.6
6-diisopropylphenyl)imidazolium chloride associated with nickel(II) acetylacetonate (3–5 mol %) was used as catalyst to efficiently cross-couple functionalized arylbromides with organomanganese reagents. The reactions were performed between 0 °C and room temperature, giving unsymmetrical biaryls in 0.25 to 24 h with 52 to 100 % yields for isolated materials. Arylchlorides showed slightly diminished reactivity